From: franck.jullien@gmail.com
To: barebox@lists.infradead.org
Subject: [PATCH 1/2] Add OpenRISC arch
Date: Tue, 20 Dec 2011 23:11:36 +0100 [thread overview]
Message-ID: <1324419097-2786-1-git-send-email-franck.jullien@gmail.com> (raw)
From: Franck Jullien <franck.jullien@gmail.com>
OpenRISC is the original flagship project of the OpenCores community.
This project aims to develop a series of general purpose open source
RISC CPU architectures.
A team from OpenCores provided the first implementation, the OpenRISC
1200, written in the Verilog hardware description language.
Even though I should have created an mach-or1200 directory, it is not
necessary for now. The OpenRISC 1200 CPU is the only one available and
it will be for some time.
Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
---
arch/openrisc/Kconfig | 29 ++
arch/openrisc/Makefile | 21 ++
arch/openrisc/configs/generic_defconfig | 20 +
arch/openrisc/cpu/Makefile | 5 +
arch/openrisc/cpu/barebox.lds.S | 98 +++++
arch/openrisc/cpu/cache.c | 154 ++++++++
arch/openrisc/cpu/cpu.c | 43 +++
arch/openrisc/cpu/exceptions.c | 84 +++++
arch/openrisc/cpu/start.S | 335 ++++++++++++++++++
arch/openrisc/include/asm/barebox.h | 4 +
arch/openrisc/include/asm/bitops.h | 28 ++
arch/openrisc/include/asm/bitops/ffs.h | 26 ++
arch/openrisc/include/asm/bitops/fls.h | 26 ++
arch/openrisc/include/asm/byteorder.h | 1 +
arch/openrisc/include/asm/cache.h | 47 +++
arch/openrisc/include/asm/common.h | 4 +
arch/openrisc/include/asm/elf.h | 107 ++++++
arch/openrisc/include/asm/io.h | 123 +++++++
arch/openrisc/include/asm/openrisc_exc.h | 41 +++
arch/openrisc/include/asm/posix_types.h | 71 ++++
arch/openrisc/include/asm/ptrace.h | 131 +++++++
arch/openrisc/include/asm/sections.h | 1 +
arch/openrisc/include/asm/spr-defs.h | 567 ++++++++++++++++++++++++++++++
arch/openrisc/include/asm/string.h | 4 +
arch/openrisc/include/asm/swab.h | 4 +
arch/openrisc/include/asm/system.h | 39 ++
arch/openrisc/include/asm/types.h | 79 ++++
arch/openrisc/lib/Makefile | 6 +
arch/openrisc/lib/ashldi3.S | 41 +++
arch/openrisc/lib/board.c | 42 +++
arch/openrisc/lib/clock.c | 50 +++
arch/openrisc/lib/cpuinfo.c | 156 ++++++++
arch/openrisc/lib/lshrdi3.S | 41 +++
arch/openrisc/lib/muldi3.S | 58 +++
34 files changed, 2486 insertions(+), 0 deletions(-)
create mode 100644 arch/openrisc/Kconfig
create mode 100644 arch/openrisc/Makefile
create mode 100644 arch/openrisc/configs/generic_defconfig
create mode 100644 arch/openrisc/cpu/Makefile
create mode 100644 arch/openrisc/cpu/barebox.lds.S
create mode 100644 arch/openrisc/cpu/cache.c
create mode 100644 arch/openrisc/cpu/cpu.c
create mode 100644 arch/openrisc/cpu/exceptions.c
create mode 100644 arch/openrisc/cpu/start.S
create mode 100644 arch/openrisc/include/asm/barebox.h
create mode 100644 arch/openrisc/include/asm/bitops.h
create mode 100644 arch/openrisc/include/asm/bitops/ffs.h
create mode 100644 arch/openrisc/include/asm/bitops/fls.h
create mode 100644 arch/openrisc/include/asm/byteorder.h
create mode 100644 arch/openrisc/include/asm/cache.h
create mode 100644 arch/openrisc/include/asm/common.h
create mode 100644 arch/openrisc/include/asm/elf.h
create mode 100644 arch/openrisc/include/asm/io.h
create mode 100644 arch/openrisc/include/asm/openrisc_exc.h
create mode 100644 arch/openrisc/include/asm/posix_types.h
create mode 100644 arch/openrisc/include/asm/ptrace.h
create mode 100644 arch/openrisc/include/asm/sections.h
create mode 100644 arch/openrisc/include/asm/spr-defs.h
create mode 100644 arch/openrisc/include/asm/string.h
create mode 100644 arch/openrisc/include/asm/swab.h
create mode 100644 arch/openrisc/include/asm/system.h
create mode 100644 arch/openrisc/include/asm/types.h
create mode 100644 arch/openrisc/lib/Makefile
create mode 100644 arch/openrisc/lib/ashldi3.S
create mode 100644 arch/openrisc/lib/board.c
create mode 100644 arch/openrisc/lib/clock.c
create mode 100644 arch/openrisc/lib/cpuinfo.c
create mode 100644 arch/openrisc/lib/lshrdi3.S
create mode 100644 arch/openrisc/lib/muldi3.S
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
new file mode 100644
index 0000000..a3cb337
--- /dev/null
+++ b/arch/openrisc/Kconfig
@@ -0,0 +1,29 @@
+config OPENRISC
+ bool
+ select HAVE_CONFIGURABLE_MEMORY_LAYOUT
+ default y
+
+# not used
+config ARCH_TEXT_BASE
+ hex
+ default 0x00000000
+
+config BOARDINFO
+ default "Openrisc simulator" if GENERIC
+
+choice
+ prompt "Select your board"
+
+config GENERIC
+ bool "Generic "
+ select OPENRISC
+
+endchoice
+
+source common/Kconfig
+source commands/Kconfig
+source net/Kconfig
+source drivers/Kconfig
+source fs/Kconfig
+source lib/Kconfig
+source crypto/Kconfig
diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
new file mode 100644
index 0000000..fd8bbbf
--- /dev/null
+++ b/arch/openrisc/Makefile
@@ -0,0 +1,21 @@
+CPPFLAGS += -D__OR1K__ -ffixed-r10 -mhard-mul -mhard-div
+
+board-$(CONFIG_GENERIC) := generic
+
+KALLSYMS += --symbol-prefix=_
+
+archprepare: maketools
+
+PHONY += maketools
+
+ifneq ($(board-y),)
+BOARD := arch/openrisc/boards/$(board-y)/
+else
+BOARD :=
+endif
+
+common-y += $(BOARD)
+common-y += arch/openrisc/lib/
+common-y += arch/openrisc/cpu/
+
+lds-y += arch/openrisc/cpu/barebox.lds
diff --git a/arch/openrisc/configs/generic_defconfig b/arch/openrisc/configs/generic_defconfig
new file mode 100644
index 0000000..68e0371
--- /dev/null
+++ b/arch/openrisc/configs/generic_defconfig
@@ -0,0 +1,20 @@
+CONFIG_LONGHELP=y
+CONFIG_HUSH_FANCY_PROMPT=y
+CONFIG_CMDLINE_EDITING=y
+CONFIG_AUTO_COMPLETE=y
+CONFIG_PARTITION=y
+CONFIG_DEFAULT_ENVIRONMENT_GENERIC=y
+CONFIG_CMD_EDIT=y
+CONFIG_CMD_SAVEENV=y
+CONFIG_CMD_LOADENV=y
+CONFIG_CMD_EXPORT=y
+CONFIG_CMD_PRINTENV=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_FLASH=y
+# CONFIG_CMD_BOOTM is not set
+CONFIG_CMD_RESET=y
+CONFIG_CMD_GO=y
+CONFIG_CMD_TIMEOUT=y
+CONFIG_CMD_PARTITION=y
+CONFIG_DRIVER_SERIAL_NS16550=y
diff --git a/arch/openrisc/cpu/Makefile b/arch/openrisc/cpu/Makefile
new file mode 100644
index 0000000..1cd7506
--- /dev/null
+++ b/arch/openrisc/cpu/Makefile
@@ -0,0 +1,5 @@
+obj-y += start.o
+obj-y += cpu.o
+obj-y += exceptions.o
+obj-y += cache.o
+extra-y += barebox.lds
diff --git a/arch/openrisc/cpu/barebox.lds.S b/arch/openrisc/cpu/barebox.lds.S
new file mode 100644
index 0000000..d3e02a6
--- /dev/null
+++ b/arch/openrisc/cpu/barebox.lds.S
@@ -0,0 +1,98 @@
+/*
+ * barebox - barebox.lds.S
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <asm-generic/barebox.lds.h>
+
+OUTPUT_FORMAT("elf32-or32", "elf32-or32", "elf32-or32")
+__DYNAMIC = 0;
+
+MEMORY
+{
+ vectors : ORIGIN = 0, LENGTH = 0x2000
+ ram : ORIGIN = TEXT_BASE,
+ LENGTH = BAREBOX_RESERVED_SIZE
+}
+
+SECTIONS
+{
+ .vectors :
+ {
+ *(.vectors)
+ } > vectors
+
+ . = ALIGN(4);
+ __start = .;
+ .text : AT (__start) {
+ _stext = .;
+ *(.text)
+ _etext = .;
+ *(.lit)
+ *(.shdata)
+ _endtext = .;
+ } > ram
+
+ . = ALIGN(4);
+ .rodata : {
+ *(.rodata);
+ *(.rodata.*)
+ } > ram
+
+ . = ALIGN(4);
+ . = .;
+ __barebox_cmd_start = .;
+ .barebox_cmd : { BAREBOX_CMDS } > ram
+ __barebox_cmd_end = .;
+
+ __barebox_magicvar_start = .;
+ .barebox_magicvar : { BAREBOX_MAGICVARS } > ram
+ __barebox_magicvar_end = .;
+
+ __barebox_initcalls_start = .;
+ .barebox_initcalls : { INITCALLS } > ram
+ __barebox_initcalls_end = .;
+
+ ___usymtab_start = .;
+ __usymtab : { BAREBOX_SYMS } > ram
+ ___usymtab_end = .;
+
+ __etext = .; /* End of text and rodata section */
+
+ . = ALIGN(4);
+ .data : {
+ sdata = .;
+ _sdata = .;
+ *(.data)
+ edata = .;
+ _edata = .;
+ } > ram
+
+ . = ALIGN(4);
+ .bss :
+ {
+ __bss_start = .;
+ _bss_start = .;
+ *(.shbss)
+ *(.bss)
+ *(COMMON)
+ _bss_end = .;
+ __bss_stop = .;
+ } > ram
+ __end = .;
+}
diff --git a/arch/openrisc/cpu/cache.c b/arch/openrisc/cpu/cache.c
new file mode 100644
index 0000000..81a0d13
--- /dev/null
+++ b/arch/openrisc/cpu/cache.c
@@ -0,0 +1,154 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/system.h>
+
+void flush_dcache_range(unsigned long addr, unsigned long stop)
+{
+ ulong block_size = (mfspr(SPR_DCCFGR) & SPR_DCCFGR_CBS) ? 32 : 16;
+
+ while (addr < stop) {
+ mtspr(SPR_DCBFR, addr);
+ addr += block_size;
+ }
+}
+
+void invalidate_dcache_range(unsigned long addr, unsigned long stop)
+{
+ ulong block_size = (mfspr(SPR_DCCFGR) & SPR_DCCFGR_CBS) ? 32 : 16;
+
+ while (addr < stop) {
+ mtspr(SPR_DCBIR, addr);
+ addr += block_size;
+ }
+}
+
+static void invalidate_icache_range(unsigned long addr, unsigned long stop)
+{
+ ulong block_size = (mfspr(SPR_ICCFGR) & SPR_ICCFGR_CBS) ? 32 : 16;
+
+ while (addr < stop) {
+ mtspr(SPR_ICBIR, addr);
+ addr += block_size;
+ }
+}
+
+void flush_cache(unsigned long addr, unsigned long size)
+{
+ flush_dcache_range(addr, addr + size);
+ invalidate_icache_range(addr, addr + size);
+}
+
+int icache_status(void)
+{
+ return mfspr(SPR_SR) & SPR_SR_ICE;
+}
+
+int checkicache(void)
+{
+ unsigned long iccfgr;
+ unsigned long cache_set_size;
+ unsigned long cache_ways;
+ unsigned long cache_block_size;
+
+ iccfgr = mfspr(SPR_ICCFGR);
+ cache_ways = 1 << (iccfgr & SPR_ICCFGR_NCW);
+ cache_set_size = 1 << ((iccfgr & SPR_ICCFGR_NCS) >> 3);
+ cache_block_size = (iccfgr & SPR_ICCFGR_CBS) ? 32 : 16;
+
+ return cache_set_size * cache_ways * cache_block_size;
+}
+
+int dcache_status(void)
+{
+ return mfspr(SPR_SR) & SPR_SR_DCE;
+}
+
+int checkdcache(void)
+{
+ unsigned long dccfgr;
+ unsigned long cache_set_size;
+ unsigned long cache_ways;
+ unsigned long cache_block_size;
+
+ dccfgr = mfspr(SPR_DCCFGR);
+ cache_ways = 1 << (dccfgr & SPR_DCCFGR_NCW);
+ cache_set_size = 1 << ((dccfgr & SPR_DCCFGR_NCS) >> 3);
+ cache_block_size = (dccfgr & SPR_DCCFGR_CBS) ? 32 : 16;
+
+ return cache_set_size * cache_ways * cache_block_size;
+}
+
+void dcache_enable(void)
+{
+ mtspr(SPR_SR, mfspr(SPR_SR) | SPR_SR_DCE);
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+}
+
+void dcache_disable(void)
+{
+ mtspr(SPR_SR, mfspr(SPR_SR) & ~SPR_SR_DCE);
+}
+
+void icache_enable(void)
+{
+ mtspr(SPR_SR, mfspr(SPR_SR) | SPR_SR_ICE);
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+ asm volatile("l.nop");
+}
+
+void icache_disable(void)
+{
+ mtspr(SPR_SR, mfspr(SPR_SR) & ~SPR_SR_ICE);
+}
+
+int cache_init(void)
+{
+ if (mfspr(SPR_UPR) & SPR_UPR_ICP) {
+ icache_disable();
+ invalidate_icache_range(0, checkicache());
+ icache_enable();
+ }
+
+ if (mfspr(SPR_UPR) & SPR_UPR_DCP) {
+ dcache_disable();
+ invalidate_dcache_range(0, checkdcache());
+ dcache_enable();
+ }
+
+ return 0;
+}
+
+core_initcall(cache_init);
diff --git a/arch/openrisc/cpu/cpu.c b/arch/openrisc/cpu/cpu.c
new file mode 100644
index 0000000..48f5d03
--- /dev/null
+++ b/arch/openrisc/cpu/cpu.c
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/system.h>
+#include <asm/openrisc_exc.h>
+
+int cleanup_before_linux(void)
+{
+ return 0;
+}
+
+extern void __reset(void);
+
+void __noreturn reset_cpu(ulong ignored)
+{
+ __reset();
+ /* not reached, __reset does not return */
+
+ /* Not reached */
+ while (1);
+}
diff --git a/arch/openrisc/cpu/exceptions.c b/arch/openrisc/cpu/exceptions.c
new file mode 100644
index 0000000..a979258
--- /dev/null
+++ b/arch/openrisc/cpu/exceptions.c
@@ -0,0 +1,84 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/system.h>
+
+static const char * const excp_table[] = {
+ "Unknown exception",
+ "Reset",
+ "Bus Error",
+ "Data Page Fault",
+ "Instruction Page Fault",
+ "Tick Timer",
+ "Alignment",
+ "Illegal Instruction",
+ "External Interrupt",
+ "D-TLB Miss",
+ "I-TLB Miss",
+ "Range",
+ "System Call",
+ "Floating Point",
+ "Trap",
+};
+
+static void (*handlers[32])(void);
+
+void exception_install_handler(int exception, void (*handler)(void))
+{
+ if (exception < 0 || exception > 31)
+ return;
+
+ handlers[exception] = handler;
+}
+
+void exception_free_handler(int exception)
+{
+ if (exception < 0 || exception > 31)
+ return;
+
+ handlers[exception] = 0;
+}
+
+static void exception_hang(int vect)
+{
+ printf("Unhandled exception at 0x%x ", vect & 0xff00);
+
+ vect = ((vect >> 8) & 0xff);
+ if (vect < ARRAY_SIZE(excp_table))
+ printf("(%s)\n", excp_table[vect]);
+ else
+ printf("(%s)\n", excp_table[0]);
+
+ printf("EPCR: 0x%08lx\n", mfspr(SPR_EPCR_BASE));
+ printf("EEAR: 0x%08lx\n", mfspr(SPR_EEAR_BASE));
+ printf("ESR: 0x%08lx\n", mfspr(SPR_ESR_BASE));
+ hang();
+}
+
+void exception_handler(int vect)
+{
+ int exception = vect >> 8;
+
+ if (handlers[exception])
+ handlers[exception]();
+ else
+ exception_hang(vect);
+}
diff --git a/arch/openrisc/cpu/start.S b/arch/openrisc/cpu/start.S
new file mode 100644
index 0000000..056f116
--- /dev/null
+++ b/arch/openrisc/cpu/start.S
@@ -0,0 +1,335 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <asm-generic/memory_layout.h>
+#include <asm/spr-defs.h>
+
+#define EXCEPTION_STACK_SIZE (128+128)
+
+#define HANDLE_EXCEPTION \
+ l.addi r1, r1, -EXCEPTION_STACK_SIZE ;\
+ l.sw 0x1c(r1), r9 ;\
+ l.jal _exception_handler ;\
+ l.nop ;\
+ l.lwz r9, 0x1c(r1) ;\
+ l.addi r1, r1, EXCEPTION_STACK_SIZE ;\
+ l.rfe ;\
+ l.nop
+
+ .section .vectors, "ax"
+ .global __reset
+
+ /* reset */
+ .org 0x100
+__reset:
+ /* there is no guarantee r0 is hardwired to zero, clear it here */
+ l.andi r0, r0, 0
+ /* reset stack and frame pointers */
+ l.andi r1, r0, 0
+ l.andi r2, r0, 0
+
+ /* set supervisor mode */
+ l.ori r3,r0,SPR_SR_SM
+ l.mtspr r0,r3,SPR_SR
+
+ /* Relocate barebox */
+ l.movhi r3,hi(__start) /* source start address */
+ l.ori r3,r3,lo(__start)
+ l.movhi r4,hi(_stext) /* dest start address */
+ l.ori r4,r4,lo(_stext)
+ l.movhi r5,hi(__end) /* dest end address */
+ l.ori r5,r5,lo(__end)
+
+.L_reloc:
+ l.lwz r6,0(r3)
+ l.sw 0(r4),r6
+ l.addi r3,r3,4
+ l.sfltu r4,r5
+ l.bf .L_reloc
+ l.addi r4,r4,4 /*delay slot */
+
+#ifdef CONFIG_SYS_RELOCATE_VECTORS
+ /* Relocate vectors from 0xf0000000 to 0x00000000 */
+ l.movhi r4, 0xf000 /* source */
+ l.movhi r5, 0 /* destination */
+ l.addi r6, r5, CONFIG_SYS_VECTORS_LEN /* length */
+.L_relocvectors:
+ l.lwz r7, 0(r4)
+ l.sw 0(r5), r7
+ l.addi r5, r5, 4
+ l.sfeq r5,r6
+ l.bnf .L_relocvectors
+ l.addi r4,r4, 4
+#endif
+
+ l.j _start
+ l.nop
+
+ /* bus error */
+ .org 0x200
+ HANDLE_EXCEPTION
+
+ /* data page fault */
+ .org 0x300
+ HANDLE_EXCEPTION
+
+ /* instruction page fault */
+ .org 0x400
+ HANDLE_EXCEPTION
+
+ /* tick timer */
+ .org 0x500
+ HANDLE_EXCEPTION
+
+ /* alignment */
+ .org 0x600
+ HANDLE_EXCEPTION
+
+ /* illegal instruction */
+ .org 0x700
+ HANDLE_EXCEPTION
+
+ /* external interrupt */
+ .org 0x800
+ HANDLE_EXCEPTION
+
+ /* D-TLB miss */
+ .org 0x900
+ HANDLE_EXCEPTION
+
+ /* I-TLB miss */
+ .org 0xa00
+ HANDLE_EXCEPTION
+
+ /* range */
+ .org 0xb00
+ HANDLE_EXCEPTION
+
+ /* system call */
+ .org 0xc00
+ HANDLE_EXCEPTION
+
+ /* floating point */
+ .org 0xd00
+ HANDLE_EXCEPTION
+
+ /* trap */
+ .org 0xe00
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0xf00
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1100
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1200
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1300
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1400
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1500
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1600
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1700
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1800
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1900
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1a00
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1b00
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1c00
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1d00
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1e00
+ HANDLE_EXCEPTION
+
+ /* reserved */
+ .org 0x1f00
+ HANDLE_EXCEPTION
+
+ /* Startup routine */
+ .text
+ .global _start
+_start:
+ /* Init stack and frame pointers */
+ l.movhi r1, hi(STACK_BASE)
+ l.ori r1, r1, lo(STACK_BASE)
+ l.or r2, r0, r1
+
+ /* clear BSS segments */
+ l.movhi r4, hi(_bss_start)
+ l.ori r4, r4, lo(_bss_start)
+ l.movhi r5, hi(_bss_end)
+ l.ori r5, r5, lo(_bss_end)
+.L_clear_bss:
+ l.sw 0(r4), r0
+ l.sfltu r4,r5
+ l.bf .L_clear_bss
+ l.addi r4,r4,4
+
+ /* Reset registers before jumping to board_init */
+ l.andi r3, r0, 0
+ l.andi r4, r0, 0
+ l.andi r5, r0, 0
+ l.andi r6, r0, 0
+ l.andi r7, r0, 0
+ l.andi r8, r0, 0
+ l.andi r9, r0, 0
+ l.andi r10, r0, 0
+ l.andi r11, r0, 0
+ l.andi r12, r0, 0
+ l.andi r13, r0, 0
+ l.andi r14, r0, 0
+ l.andi r15, r0, 0
+ l.andi r17, r0, 0
+ l.andi r18, r0, 0
+ l.andi r19, r0, 0
+ l.andi r20, r0, 0
+ l.andi r21, r0, 0
+ l.andi r22, r0, 0
+ l.andi r23, r0, 0
+ l.andi r24, r0, 0
+ l.andi r25, r0, 0
+ l.andi r26, r0, 0
+ l.andi r27, r0, 0
+ l.andi r28, r0, 0
+ l.andi r29, r0, 0
+ l.andi r30, r0, 0
+ l.andi r31, r0, 0
+
+ l.j start_barebox
+ l.nop
+
+ .size _start, .-_start
+
+/*
+ * Store state onto stack and call the real exception handler
+ */
+ .section .text
+ .extern exception_handler
+ .type _exception_handler,@function
+
+_exception_handler:
+ /* Store state (r9 already saved)*/
+ l.sw 0x00(r1), r2
+ l.sw 0x04(r1), r3
+ l.sw 0x08(r1), r4
+ l.sw 0x0c(r1), r5
+ l.sw 0x10(r1), r6
+ l.sw 0x14(r1), r7
+ l.sw 0x18(r1), r8
+ l.sw 0x20(r1), r10
+ l.sw 0x24(r1), r11
+ l.sw 0x28(r1), r12
+ l.sw 0x2c(r1), r13
+ l.sw 0x30(r1), r14
+ l.sw 0x34(r1), r15
+ l.sw 0x38(r1), r16
+ l.sw 0x3c(r1), r17
+ l.sw 0x40(r1), r18
+ l.sw 0x44(r1), r19
+ l.sw 0x48(r1), r20
+ l.sw 0x4c(r1), r21
+ l.sw 0x50(r1), r22
+ l.sw 0x54(r1), r23
+ l.sw 0x58(r1), r24
+ l.sw 0x5c(r1), r25
+ l.sw 0x60(r1), r26
+ l.sw 0x64(r1), r27
+ l.sw 0x68(r1), r28
+ l.sw 0x6c(r1), r29
+ l.sw 0x70(r1), r30
+ l.sw 0x74(r1), r31
+
+ /* Save return address */
+ l.or r14, r0, r9
+ /* Call exception handler with the link address as argument */
+ l.jal exception_handler
+ l.or r3, r0, r14
+ /* Load return address */
+ l.or r9, r0, r14
+
+ /* Restore state */
+ l.lwz r2, 0x00(r1)
+ l.lwz r3, 0x04(r1)
+ l.lwz r4, 0x08(r1)
+ l.lwz r5, 0x0c(r1)
+ l.lwz r6, 0x10(r1)
+ l.lwz r7, 0x14(r1)
+ l.lwz r8, 0x18(r1)
+ l.lwz r10, 0x20(r1)
+ l.lwz r11, 0x24(r1)
+ l.lwz r12, 0x28(r1)
+ l.lwz r13, 0x2c(r1)
+ l.lwz r14, 0x30(r1)
+ l.lwz r15, 0x34(r1)
+ l.lwz r16, 0x38(r1)
+ l.lwz r17, 0x3c(r1)
+ l.lwz r18, 0x40(r1)
+ l.lwz r19, 0x44(r1)
+ l.lwz r20, 0x48(r1)
+ l.lwz r21, 0x4c(r1)
+ l.lwz r22, 0x50(r1)
+ l.lwz r23, 0x54(r1)
+ l.lwz r24, 0x58(r1)
+ l.lwz r25, 0x5c(r1)
+ l.lwz r26, 0x60(r1)
+ l.lwz r27, 0x64(r1)
+ l.lwz r28, 0x68(r1)
+ l.lwz r29, 0x6c(r1)
+ l.lwz r30, 0x70(r1)
+ l.lwz r31, 0x74(r1)
+ l.jr r9
+ l.nop
diff --git a/arch/openrisc/include/asm/barebox.h b/arch/openrisc/include/asm/barebox.h
new file mode 100644
index 0000000..9dd1df8
--- /dev/null
+++ b/arch/openrisc/include/asm/barebox.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_BAREBOX_H_
+#define _ASM_BAREBOX_H_
+
+#endif /* _ASM_BAREBOX_H_ */
diff --git a/arch/openrisc/include/asm/bitops.h b/arch/openrisc/include/asm/bitops.h
new file mode 100644
index 0000000..c001a5d
--- /dev/null
+++ b/arch/openrisc/include/asm/bitops.h
@@ -0,0 +1,28 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_OPENRISC_BITOPS_H
+#define __ASM_OPENRISC_BITOPS_H
+
+#define PLATFORM_FLS
+#include <asm/bitops/fls.h>
+#define PLATFORM_FFS
+#include <asm/bitops/ffs.h>
+
+#endif /* __ASM_GENERIC_BITOPS_H */
diff --git a/arch/openrisc/include/asm/bitops/ffs.h b/arch/openrisc/include/asm/bitops/ffs.h
new file mode 100644
index 0000000..1de5295
--- /dev/null
+++ b/arch/openrisc/include/asm/bitops/ffs.h
@@ -0,0 +1,26 @@
+/*
+ * OpenRISC Linux
+ *
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_FFS_H
+#define __ASM_OPENRISC_FFS_H
+
+static inline int ffs(int x)
+{
+ int ret;
+
+ __asm__ ("l.ff1 %0,%1"
+ : "=r" (ret)
+ : "r" (x));
+
+ return ret;
+}
+
+#endif /* __ASM_OPENRISC_FFS_H */
diff --git a/arch/openrisc/include/asm/bitops/fls.h b/arch/openrisc/include/asm/bitops/fls.h
new file mode 100644
index 0000000..8c77c13
--- /dev/null
+++ b/arch/openrisc/include/asm/bitops/fls.h
@@ -0,0 +1,26 @@
+/*
+ * OpenRISC Linux
+ *
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_FLS_H
+#define __ASM_OPENRISC_FLS_H
+
+static inline int fls(int x)
+{
+ int ret;
+
+ __asm__ ("l.fl1 %0,%1"
+ : "=r" (ret)
+ : "r" (x));
+
+ return ret;
+}
+
+#endif /* __ASM_OPENRISC_FLS_H */
diff --git a/arch/openrisc/include/asm/byteorder.h b/arch/openrisc/include/asm/byteorder.h
new file mode 100644
index 0000000..60d14f7
--- /dev/null
+++ b/arch/openrisc/include/asm/byteorder.h
@@ -0,0 +1 @@
+#include <linux/byteorder/big_endian.h>
diff --git a/arch/openrisc/include/asm/cache.h b/arch/openrisc/include/asm/cache.h
new file mode 100644
index 0000000..05cf998
--- /dev/null
+++ b/arch/openrisc/include/asm/cache.h
@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_OPENRISC_CACHE_H_
+#define __ASM_OPENRISC_CACHE_H_
+
+void flush_dcache_range(unsigned long addr, unsigned long stop);
+void invalidate_dcache_range(unsigned long addr, unsigned long stop);
+void flush_cache(unsigned long addr, unsigned long size);
+int icache_status(void);
+int checkicache(void);
+int dcache_status(void);
+int checkdcache(void);
+void dcache_enable(void);
+void dcache_disable(void);
+void icache_enable(void);
+void icache_disable(void);
+
+/*
+ * Valid L1 data cache line sizes for the OpenRISC architecture are
+ * 16 and 32 bytes.
+ * If the board configuration has not specified one we default to the
+ * largest of these values for alignment of DMA buffers.
+ */
+#ifdef CONFIG_SYS_CACHELINE_SIZE
+#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE
+#else
+#define ARCH_DMA_MINALIGN 32
+#endif
+
+#endif /* __ASM_OPENRISC_CACHE_H_ */
diff --git a/arch/openrisc/include/asm/common.h b/arch/openrisc/include/asm/common.h
new file mode 100644
index 0000000..027dca2
--- /dev/null
+++ b/arch/openrisc/include/asm/common.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_COMMON_H
+#define __ASM_COMMON_H
+
+#endif /* _ASM_COMMON_H */
diff --git a/arch/openrisc/include/asm/elf.h b/arch/openrisc/include/asm/elf.h
new file mode 100644
index 0000000..6a134a5
--- /dev/null
+++ b/arch/openrisc/include/asm/elf.h
@@ -0,0 +1,107 @@
+/*
+ * OpenRISC Linux
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others. All original copyrights apply as per the original source
+ * declaration.
+ *
+ * OpenRISC implementation:
+ * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ * et al.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_ELF_H
+#define __ASM_OPENRISC_ELF_H
+
+/*
+ * ELF register definitions..
+ */
+#include <linux/types.h>
+#include <asm/ptrace.h>
+
+/* The OR1K relocation types... not all relevant for module loader */
+#define R_OR32_NONE 0
+#define R_OR32_32 1
+#define R_OR32_16 2
+#define R_OR32_8 3
+#define R_OR32_CONST 4
+#define R_OR32_CONSTH 5
+#define R_OR32_JUMPTARG 6
+#define R_OR32_VTINHERIT 7
+#define R_OR32_VTENTRY 8
+
+typedef unsigned long elf_greg_t;
+
+/*
+ * Note that NGREG is defined to ELF_NGREG in include/linux/elfcore.h, and is
+ * thus exposed to user-space.
+ */
+#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+/* A placeholder; OR32 does not have fp support yes, so no fp regs for now. */
+typedef unsigned long elf_fpregset_t;
+
+/* This should be moved to include/linux/elf.h */
+#define EM_OR32 0x8472
+#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_ARCH EM_OR32
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2MSB
+
+#ifdef __KERNEL__
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+
+#define elf_check_arch(x) \
+ (((x)->e_machine == EM_OR32) || ((x)->e_machine == EM_OPENRISC))
+
+/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
+ use of this is to invoke "./ld.so someprog" to test out a new version of
+ the loader. We need to make sure that it is out of the way of the program
+ that it will "exec", and that there is sufficient room for the brk. */
+
+#define ELF_ET_DYN_BASE (0x08000000)
+
+/*
+ * Enable dump using regset.
+ * This covers all of general/DSP/FPU regs.
+ */
+#define CORE_DUMP_USE_REGSET
+
+#define ELF_EXEC_PAGESIZE 8192
+
+extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt);
+#define ELF_CORE_COPY_REGS(dest, regs) dump_elf_thread(dest, regs);
+
+/* This yields a mask that user programs can use to figure out what
+ instruction set this cpu supports. This could be done in userspace,
+ but it's not easy, and we've already done it here. */
+
+#define ELF_HWCAP (0)
+
+/* This yields a string that ld.so will use to load implementation
+ specific libraries for optimization. This is more specific in
+ intent than poking at uname or /proc/cpuinfo.
+
+ For the moment, we have only optimizations for the Intel generations,
+ but that could change... */
+
+#define ELF_PLATFORM (NULL)
+
+#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
+
+#endif /* __KERNEL__ */
+#endif
diff --git a/arch/openrisc/include/asm/io.h b/arch/openrisc/include/asm/io.h
new file mode 100644
index 0000000..19b260a
--- /dev/null
+++ b/arch/openrisc/include/asm/io.h
@@ -0,0 +1,123 @@
+/*
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_OPENRISC_IO_H
+#define __ASM_OPENRISC_IO_H
+
+#include <asm/byteorder.h>
+
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+#define MAP_NOCACHE (0)
+#define MAP_WRCOMBINE (0)
+#define MAP_WRBACK (0)
+#define MAP_WRTHROUGH (0)
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
+{
+ return (void *)paddr;
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
+{
+
+}
+
+/*
+ * Change virtual addresses to physical addresses
+ */
+static inline phys_addr_t virt_to_phys(void *vaddr)
+{
+ return (phys_addr_t)(vaddr);
+}
+
+
+/*
+ * readX/writeX() are used to access memory mapped devices. On some
+ * architectures the memory mapped IO stuff needs to be accessed
+ * differently. On the openrisc architecture, we just read/write the
+ * memory location directly.
+ */
+#define readb(addr) (*(volatile unsigned char *) (addr))
+#define readw(addr) (*(volatile unsigned short *) (addr))
+#define readl(addr) (*(volatile unsigned int *) (addr))
+#define __raw_readb readb
+#define __raw_readw readw
+#define __raw_readl readl
+
+#define writeb(b, addr) ((*(volatile unsigned char *) (addr)) = (b))
+#define writew(b, addr) ((*(volatile unsigned short *) (addr)) = (b))
+#define writel(b, addr) ((*(volatile unsigned int *) (addr)) = (b))
+#define __raw_writeb writeb
+#define __raw_writew writew
+#define __raw_writel writel
+
+#define memset_io(a, b, c) memset((void *)(a), (b), (c))
+#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
+#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
+
+#define out_be32(a, v) __raw_writel((v), (void __iomem __force *)(a))
+#define out_be16(a, v) __raw_writew((v), (a))
+
+#define in_be32(a) __raw_readl((const void __iomem __force *)(a))
+#define in_be16(a) __raw_readw(a)
+
+#define writel_be(v, a) out_be32((__force unsigned *)a, v)
+#define readl_be(a) in_be32((__force unsigned *)a)
+
+/*
+ * Again, OpenRISC does not require mem IO specific function.
+ */
+
+
+#define IO_BASE 0x0
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define inb(port) readb((port + IO_BASE))
+#define outb(value, port) writeb((value), (port + IO_BASE))
+#define inb_p(port) inb((port))
+#define outb_p(value, port) outb((value), (port))
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p) __va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p) p
+
+#define ioread8(addr) readb(addr)
+#define ioread16(addr) readw(addr)
+#define ioread32(addr) readl(addr)
+
+#define iowrite8(v, addr) writeb((v), (addr))
+#define iowrite16(v, addr) writew((v), (addr))
+#define iowrite32(v, addr) writel((v), (addr))
+
+#endif
diff --git a/arch/openrisc/include/asm/openrisc_exc.h b/arch/openrisc/include/asm/openrisc_exc.h
new file mode 100644
index 0000000..33f6453
--- /dev/null
+++ b/arch/openrisc/include/asm/openrisc_exc.h
@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _OPENRISC_EXC_H_
+#define _OPENRISC_EXC_H_
+
+#define EXC_RESET 0x01
+#define EXC_BUS_ERROR 0x02
+#define EXC_DATA_PAGE_FAULT 0x03
+#define EXC_INSTR_PAGE_FAULT 0x04
+#define EXC_TIMER 0x05
+#define EXC_ALIGNMENT 0x06
+#define EXC_ILLEGAL_INSTR 0x07
+#define EXC_EXT_IRQ 0x08
+#define EXC_DTLB_MISS 0x09
+#define EXC_ITLB_MISS 0x0a
+#define EXC_RANGE 0x0b
+#define EXC_SYSCALL 0x0c
+#define EXC_FLOAT_POINT 0x0d
+#define EXC_TRAP 0x0e
+
+void exception_install_handler(int exception, void (*handler)(void));
+void exception_free_handler(int exception);
+
+#endif
diff --git a/arch/openrisc/include/asm/posix_types.h b/arch/openrisc/include/asm/posix_types.h
new file mode 100644
index 0000000..7f4c942
--- /dev/null
+++ b/arch/openrisc/include/asm/posix_types.h
@@ -0,0 +1,71 @@
+/*
+ * Based on microblaze implementation:
+ * Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au>
+ * Copyright (C) 2001,2002 NEC Corporation
+ * Copyright (C) 2001,2002 Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __ASM_OPENRISC_POSIX_TYPES_H
+#define __ASM_OPENRISC_POSIX_TYPES_H
+
+typedef unsigned long __kernel_ino_t;
+typedef unsigned long long __kernel_ino64_t;
+typedef unsigned int __kernel_mode_t;
+typedef unsigned int __kernel_nlink_t;
+typedef long __kernel_off_t;
+typedef long long __kernel_loff_t;
+typedef int __kernel_pid_t;
+typedef unsigned short __kernel_ipc_pid_t;
+typedef unsigned int __kernel_uid_t;
+typedef unsigned int __kernel_gid_t;
+typedef unsigned int __kernel_size_t;
+typedef int __kernel_ssize_t;
+typedef int __kernel_ptrdiff_t;
+typedef long __kernel_time_t;
+typedef long __kernel_suseconds_t;
+typedef long __kernel_clock_t;
+typedef int __kernel_daddr_t;
+typedef char *__kernel_caddr_t;
+typedef unsigned short __kernel_uid16_t;
+typedef unsigned short __kernel_gid16_t;
+typedef unsigned int __kernel_uid32_t;
+typedef unsigned int __kernel_gid32_t;
+
+typedef unsigned short __kernel_old_uid_t;
+typedef unsigned short __kernel_old_gid_t;
+
+
+typedef struct {
+#if defined(__KERNEL__) || defined(__USE_ALL)
+ int val[2];
+#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */
+ int __val[2];
+#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */
+} __kernel_fsid_t;
+
+
+#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
+
+#undef __FD_SET
+#define __FD_SET(fd, fd_set) \
+ __set_bit(fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits)
+#undef __FD_CLR
+#define __FD_CLR(fd, fd_set) \
+ __clear_bit(fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits)
+#undef __FD_ISSET
+#define __FD_ISSET(fd, fd_set) \
+ __test_bit(fd, (void *)&((__kernel_fd_set *)fd_set)->fds_bits)
+#undef __FD_ZERO
+#define __FD_ZERO(fd_set) \
+ memset(fd_set, 0, sizeof(*(fd_set *)fd_set))
+
+#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */
+
+#endif /* __ASM_OPENRISC_POSIX_TYPES_H */
diff --git a/arch/openrisc/include/asm/ptrace.h b/arch/openrisc/include/asm/ptrace.h
new file mode 100644
index 0000000..ffdea52
--- /dev/null
+++ b/arch/openrisc/include/asm/ptrace.h
@@ -0,0 +1,131 @@
+/*
+ * OpenRISC Linux
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others. All original copyrights apply as per the original source
+ * declaration.
+ *
+ * OpenRISC implementation:
+ * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ * et al.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_PTRACE_H
+#define __ASM_OPENRISC_PTRACE_H
+
+#include <asm/spr-defs.h>
+
+#ifndef __ASSEMBLY__
+/*
+ * This is the layout of the regset returned by the GETREGSET ptrace call
+ */
+struct user_regs_struct {
+ /* GPR R0-R31... */
+ unsigned long gpr[32];
+ unsigned long pc;
+ unsigned long sr;
+ unsigned long pad1;
+ unsigned long pad2;
+};
+#endif
+
+#ifdef __KERNEL__
+
+/*
+ * Make kernel PTrace/register structures opaque to userspace... userspace can
+ * access thread state via the regset mechanism. This allows us a bit of
+ * flexibility in how we order the registers on the stack, permitting some
+ * optimizations like packing call-clobbered registers together so that
+ * they share a cacheline (not done yet, though... future optimization).
+ */
+
+#ifndef __ASSEMBLY__
+/*
+ * This struct describes how the registers are laid out on the kernel stack
+ * during a syscall or other kernel entry.
+ *
+ * This structure should always be cacheline aligned on the stack.
+ * FIXME: I don't think that's the case right now. The alignment is
+ * taken care of elsewhere... head.S, process.c, etc.
+ */
+
+struct pt_regs {
+ union {
+ struct {
+ /* Named registers */
+ long sr; /* Stored in place of r0 */
+ long sp; /* r1 */
+ };
+ struct {
+ /* Old style */
+ long offset[2];
+ long gprs[30];
+ };
+ struct {
+ /* New style */
+ long gpr[32];
+ };
+ };
+ long pc;
+ long orig_gpr11; /* For restarting system calls */
+ long syscallno; /* Syscall number (used by strace) */
+ long dummy; /* Cheap alignment fix */
+};
+#endif /* __ASSEMBLY__ */
+
+/* TODO: Rename this to REDZONE because that's what it is */
+#define STACK_FRAME_OVERHEAD 128 /* size of minimum stack frame */
+
+#define instruction_pointer(regs) ((regs)->pc)
+#define user_mode(regs) (((regs)->sr & SPR_SR_SM) == 0)
+#define user_stack_pointer(regs) ((unsigned long)(regs)->sp)
+#define profile_pc(regs) instruction_pointer(regs)
+
+/*
+ * Offsets used by 'ptrace' system call interface.
+ */
+#define PT_SR 0
+#define PT_SP 4
+#define PT_GPR2 8
+#define PT_GPR3 12
+#define PT_GPR4 16
+#define PT_GPR5 20
+#define PT_GPR6 24
+#define PT_GPR7 28
+#define PT_GPR8 32
+#define PT_GPR9 36
+#define PT_GPR10 40
+#define PT_GPR11 44
+#define PT_GPR12 48
+#define PT_GPR13 52
+#define PT_GPR14 56
+#define PT_GPR15 60
+#define PT_GPR16 64
+#define PT_GPR17 68
+#define PT_GPR18 72
+#define PT_GPR19 76
+#define PT_GPR20 80
+#define PT_GPR21 84
+#define PT_GPR22 88
+#define PT_GPR23 92
+#define PT_GPR24 96
+#define PT_GPR25 100
+#define PT_GPR26 104
+#define PT_GPR27 108
+#define PT_GPR28 112
+#define PT_GPR29 116
+#define PT_GPR30 120
+#define PT_GPR31 124
+#define PT_PC 128
+#define PT_ORIG_GPR11 132
+#define PT_SYSCALLNO 136
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_OPENRISC_PTRACE_H */
diff --git a/arch/openrisc/include/asm/sections.h b/arch/openrisc/include/asm/sections.h
new file mode 100644
index 0000000..2b8c516
--- /dev/null
+++ b/arch/openrisc/include/asm/sections.h
@@ -0,0 +1 @@
+#include <asm-generic/sections.h>
diff --git a/arch/openrisc/include/asm/spr-defs.h b/arch/openrisc/include/asm/spr-defs.h
new file mode 100644
index 0000000..cb0cdfa
--- /dev/null
+++ b/arch/openrisc/include/asm/spr-defs.h
@@ -0,0 +1,567 @@
+/*
+ * SPR Definitions
+ *
+ * Copyright (C) 2000 Damjan Lampret
+ * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
+ * Copyright (C) 2008, 2010 Embecosm Limited
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ * et al.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This file is part of OpenRISC 1000 Architectural Simulator.
+ */
+
+#ifndef SPR_DEFS__H
+#define SPR_DEFS__H
+
+/* Definition of special-purpose registers (SPRs) */
+
+#define MAX_GRPS (32)
+#define MAX_SPRS_PER_GRP_BITS (11)
+#define MAX_SPRS_PER_GRP (1 << MAX_SPRS_PER_GRP_BITS)
+#define MAX_SPRS (0x10000)
+
+/* Base addresses for the groups */
+#define SPRGROUP_SYS (0 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_DMMU (1 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_IMMU (2 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_DC (3 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_IC (4 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_MAC (5 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_D (6 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_PC (7 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_PM (8 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_PIC (9 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_TT (10 << MAX_SPRS_PER_GRP_BITS)
+#define SPRGROUP_FP (11 << MAX_SPRS_PER_GRP_BITS)
+
+/* System control and status group */
+#define SPR_VR (SPRGROUP_SYS + 0)
+#define SPR_UPR (SPRGROUP_SYS + 1)
+#define SPR_CPUCFGR (SPRGROUP_SYS + 2)
+#define SPR_DMMUCFGR (SPRGROUP_SYS + 3)
+#define SPR_IMMUCFGR (SPRGROUP_SYS + 4)
+#define SPR_DCCFGR (SPRGROUP_SYS + 5)
+#define SPR_ICCFGR (SPRGROUP_SYS + 6)
+#define SPR_DCFGR (SPRGROUP_SYS + 7)
+#define SPR_PCCFGR (SPRGROUP_SYS + 8)
+#define SPR_NPC (SPRGROUP_SYS + 16)
+#define SPR_SR (SPRGROUP_SYS + 17)
+#define SPR_PPC (SPRGROUP_SYS + 18)
+#define SPR_FPCSR (SPRGROUP_SYS + 20)
+#define SPR_EPCR_BASE (SPRGROUP_SYS + 32)
+#define SPR_EPCR_LAST (SPRGROUP_SYS + 47)
+#define SPR_EEAR_BASE (SPRGROUP_SYS + 48)
+#define SPR_EEAR_LAST (SPRGROUP_SYS + 63)
+#define SPR_ESR_BASE (SPRGROUP_SYS + 64)
+#define SPR_ESR_LAST (SPRGROUP_SYS + 79)
+#define SPR_GPR_BASE (SPRGROUP_SYS + 1024)
+
+/* Data MMU group */
+#define SPR_DMMUCR (SPRGROUP_DMMU + 0)
+#define SPR_DTLBEIR (SPRGROUP_DMMU + 2)
+#define SPR_DTLBMR_BASE(WAY) (SPRGROUP_DMMU + 0x200 + (WAY) * 0x100)
+#define SPR_DTLBMR_LAST(WAY) (SPRGROUP_DMMU + 0x27f + (WAY) * 0x100)
+#define SPR_DTLBTR_BASE(WAY) (SPRGROUP_DMMU + 0x280 + (WAY) * 0x100)
+#define SPR_DTLBTR_LAST(WAY) (SPRGROUP_DMMU + 0x2ff + (WAY) * 0x100)
+
+/* Instruction MMU group */
+#define SPR_IMMUCR (SPRGROUP_IMMU + 0)
+#define SPR_ITLBEIR (SPRGROUP_IMMU + 2)
+#define SPR_ITLBMR_BASE(WAY) (SPRGROUP_IMMU + 0x200 + (WAY) * 0x100)
+#define SPR_ITLBMR_LAST(WAY) (SPRGROUP_IMMU + 0x27f + (WAY) * 0x100)
+#define SPR_ITLBTR_BASE(WAY) (SPRGROUP_IMMU + 0x280 + (WAY) * 0x100)
+#define SPR_ITLBTR_LAST(WAY) (SPRGROUP_IMMU + 0x2ff + (WAY) * 0x100)
+
+/* Data cache group */
+#define SPR_DCCR (SPRGROUP_DC + 0)
+#define SPR_DCBPR (SPRGROUP_DC + 1)
+#define SPR_DCBFR (SPRGROUP_DC + 2)
+#define SPR_DCBIR (SPRGROUP_DC + 3)
+#define SPR_DCBWR (SPRGROUP_DC + 4)
+#define SPR_DCBLR (SPRGROUP_DC + 5)
+#define SPR_DCR_BASE(WAY) (SPRGROUP_DC + 0x200 + (WAY) * 0x200)
+#define SPR_DCR_LAST(WAY) (SPRGROUP_DC + 0x3ff + (WAY) * 0x200)
+
+/* Instruction cache group */
+#define SPR_ICCR (SPRGROUP_IC + 0)
+#define SPR_ICBPR (SPRGROUP_IC + 1)
+#define SPR_ICBIR (SPRGROUP_IC + 2)
+#define SPR_ICBLR (SPRGROUP_IC + 3)
+#define SPR_ICR_BASE(WAY) (SPRGROUP_IC + 0x200 + (WAY) * 0x200)
+#define SPR_ICR_LAST(WAY) (SPRGROUP_IC + 0x3ff + (WAY) * 0x200)
+
+/* MAC group */
+#define SPR_MACLO (SPRGROUP_MAC + 1)
+#define SPR_MACHI (SPRGROUP_MAC + 2)
+
+/* Debug group */
+#define SPR_DVR(N) (SPRGROUP_D + (N))
+#define SPR_DCR(N) (SPRGROUP_D + 8 + (N))
+#define SPR_DMR1 (SPRGROUP_D + 16)
+#define SPR_DMR2 (SPRGROUP_D + 17)
+#define SPR_DWCR0 (SPRGROUP_D + 18)
+#define SPR_DWCR1 (SPRGROUP_D + 19)
+#define SPR_DSR (SPRGROUP_D + 20)
+#define SPR_DRR (SPRGROUP_D + 21)
+
+/* Performance counters group */
+#define SPR_PCCR(N) (SPRGROUP_PC + (N))
+#define SPR_PCMR(N) (SPRGROUP_PC + 8 + (N))
+
+/* Power management group */
+#define SPR_PMR (SPRGROUP_PM + 0)
+
+/* PIC group */
+#define SPR_PICMR (SPRGROUP_PIC + 0)
+#define SPR_PICPR (SPRGROUP_PIC + 1)
+#define SPR_PICSR (SPRGROUP_PIC + 2)
+
+/* Tick Timer group */
+#define SPR_TTMR (SPRGROUP_TT + 0)
+#define SPR_TTCR (SPRGROUP_TT + 1)
+
+/*
+ * Bit definitions for the Version Register
+ */
+#define SPR_VR_VER 0xff000000 /* Processor version */
+#define SPR_VR_CFG 0x00ff0000 /* Processor configuration */
+#define SPR_VR_RES 0x0000ffc0 /* Reserved */
+#define SPR_VR_REV 0x0000003f /* Processor revision */
+
+#define SPR_VR_VER_OFF 24
+#define SPR_VR_CFG_OFF 16
+#define SPR_VR_REV_OFF 0
+
+/*
+ * Bit definitions for the Unit Present Register
+ */
+#define SPR_UPR_UP 0x00000001 /* UPR present */
+#define SPR_UPR_DCP 0x00000002 /* Data cache present */
+#define SPR_UPR_ICP 0x00000004 /* Instruction cache present */
+#define SPR_UPR_DMP 0x00000008 /* Data MMU present */
+#define SPR_UPR_IMP 0x00000010 /* Instruction MMU present */
+#define SPR_UPR_MP 0x00000020 /* MAC present */
+#define SPR_UPR_DUP 0x00000040 /* Debug unit present */
+#define SPR_UPR_PCUP 0x00000080 /* Performance counters unit present */
+#define SPR_UPR_PMP 0x00000100 /* Power management present */
+#define SPR_UPR_PICP 0x00000200 /* PIC present */
+#define SPR_UPR_TTP 0x00000400 /* Tick timer present */
+#define SPR_UPR_RES 0x00fe0000 /* Reserved */
+#define SPR_UPR_CUP 0xff000000 /* Context units present */
+
+/*
+ * Bit definitions for the CPU configuration register
+ */
+#define SPR_CPUCFGR_NSGF 0x0000000f /* Number of shadow GPR files */
+#define SPR_CPUCFGR_CGF 0x00000010 /* Custom GPR file */
+#define SPR_CPUCFGR_OB32S 0x00000020 /* ORBIS32 supported */
+#define SPR_CPUCFGR_OB64S 0x00000040 /* ORBIS64 supported */
+#define SPR_CPUCFGR_OF32S 0x00000080 /* ORFPX32 supported */
+#define SPR_CPUCFGR_OF64S 0x00000100 /* ORFPX64 supported */
+#define SPR_CPUCFGR_OV64S 0x00000200 /* ORVDX64 supported */
+#define SPR_CPUCFGR_RES 0xfffffc00 /* Reserved */
+
+/*
+ * Bit definitions for the Debug configuration register and other
+ * constants.
+ */
+
+#define SPR_DCFGR_NDP 0x00000007 /* Number of matchpoints mask */
+#define SPR_DCFGR_NDP1 0x00000000 /* One matchpoint supported */
+#define SPR_DCFGR_NDP2 0x00000001 /* Two matchpoints supported */
+#define SPR_DCFGR_NDP3 0x00000002 /* Three matchpoints supported */
+#define SPR_DCFGR_NDP4 0x00000003 /* Four matchpoints supported */
+#define SPR_DCFGR_NDP5 0x00000004 /* Five matchpoints supported */
+#define SPR_DCFGR_NDP6 0x00000005 /* Six matchpoints supported */
+#define SPR_DCFGR_NDP7 0x00000006 /* Seven matchpoints supported */
+#define SPR_DCFGR_NDP8 0x00000007 /* Eight matchpoints supported */
+#define SPR_DCFGR_WPCI 0x00000008 /* Watchpoint counters implemented */
+
+#define MATCHPOINTS_TO_NDP(n) (1 == n ? SPR_DCFGR_NDP1 : \
+ 2 == n ? SPR_DCFGR_NDP2 : \
+ 3 == n ? SPR_DCFGR_NDP3 : \
+ 4 == n ? SPR_DCFGR_NDP4 : \
+ 5 == n ? SPR_DCFGR_NDP5 : \
+ 6 == n ? SPR_DCFGR_NDP6 : \
+ 7 == n ? SPR_DCFGR_NDP7 : SPR_DCFGR_NDP8)
+#define MAX_MATCHPOINTS 8
+#define MAX_WATCHPOINTS (MAX_MATCHPOINTS + 2)
+
+/*
+ * Bit definitions for the Supervision Register
+ */
+#define SPR_SR_SM 0x00000001 /* Supervisor Mode */
+#define SPR_SR_TEE 0x00000002 /* Tick timer Exception Enable */
+#define SPR_SR_IEE 0x00000004 /* Interrupt Exception Enable */
+#define SPR_SR_DCE 0x00000008 /* Data Cache Enable */
+#define SPR_SR_ICE 0x00000010 /* Instruction Cache Enable */
+#define SPR_SR_DME 0x00000020 /* Data MMU Enable */
+#define SPR_SR_IME 0x00000040 /* Instruction MMU Enable */
+#define SPR_SR_LEE 0x00000080 /* Little Endian Enable */
+#define SPR_SR_CE 0x00000100 /* CID Enable */
+#define SPR_SR_F 0x00000200 /* Condition Flag */
+#define SPR_SR_CY 0x00000400 /* Carry flag */
+#define SPR_SR_OV 0x00000800 /* Overflow flag */
+#define SPR_SR_OVE 0x00001000 /* Overflow flag Exception */
+#define SPR_SR_DSX 0x00002000 /* Delay Slot Exception */
+#define SPR_SR_EPH 0x00004000 /* Exception Prefix High */
+#define SPR_SR_FO 0x00008000 /* Fixed one */
+#define SPR_SR_SUMRA 0x00010000 /* Supervisor SPR read access */
+#define SPR_SR_RES 0x0ffe0000 /* Reserved */
+#define SPR_SR_CID 0xf0000000 /* Context ID */
+
+/*
+ * Bit definitions for the Data MMU Control Register
+ */
+#define SPR_DMMUCR_P2S 0x0000003e /* Level 2 Page Size */
+#define SPR_DMMUCR_P1S 0x000007c0 /* Level 1 Page Size */
+#define SPR_DMMUCR_VADDR_WIDTH 0x0000f800 /* Virtual ADDR Width */
+#define SPR_DMMUCR_PADDR_WIDTH 0x000f0000 /* Physical ADDR Width */
+
+/*
+ * Bit definitions for the Instruction MMU Control Register
+ */
+#define SPR_IMMUCR_P2S 0x0000003e /* Level 2 Page Size */
+#define SPR_IMMUCR_P1S 0x000007c0 /* Level 1 Page Size */
+#define SPR_IMMUCR_VADDR_WIDTH 0x0000f800 /* Virtual ADDR Width */
+#define SPR_IMMUCR_PADDR_WIDTH 0x000f0000 /* Physical ADDR Width */
+
+/*
+ * Bit definitions for the Data TLB Match Register
+ */
+#define SPR_DTLBMR_V 0x00000001 /* Valid */
+#define SPR_DTLBMR_PL1 0x00000002 /* Page Level 1 (if 0 then PL2) */
+#define SPR_DTLBMR_CID 0x0000003c /* Context ID */
+#define SPR_DTLBMR_LRU 0x000000c0 /* Least Recently Used */
+#define SPR_DTLBMR_VPN 0xfffff000 /* Virtual Page Number */
+
+/*
+ * Bit definitions for the Data TLB Translate Register
+ */
+#define SPR_DTLBTR_CC 0x00000001 /* Cache Coherency */
+#define SPR_DTLBTR_CI 0x00000002 /* Cache Inhibit */
+#define SPR_DTLBTR_WBC 0x00000004 /* Write-Back Cache */
+#define SPR_DTLBTR_WOM 0x00000008 /* Weakly-Ordered Memory */
+#define SPR_DTLBTR_A 0x00000010 /* Accessed */
+#define SPR_DTLBTR_D 0x00000020 /* Dirty */
+#define SPR_DTLBTR_URE 0x00000040 /* User Read Enable */
+#define SPR_DTLBTR_UWE 0x00000080 /* User Write Enable */
+#define SPR_DTLBTR_SRE 0x00000100 /* Supervisor Read Enable */
+#define SPR_DTLBTR_SWE 0x00000200 /* Supervisor Write Enable */
+#define SPR_DTLBTR_PPN 0xfffff000 /* Physical Page Number */
+
+/*
+ * Bit definitions for the Instruction TLB Match Register
+ */
+#define SPR_ITLBMR_V 0x00000001 /* Valid */
+#define SPR_ITLBMR_PL1 0x00000002 /* Page Level 1 (if 0 then PL2) */
+#define SPR_ITLBMR_CID 0x0000003c /* Context ID */
+#define SPR_ITLBMR_LRU 0x000000c0 /* Least Recently Used */
+#define SPR_ITLBMR_VPN 0xfffff000 /* Virtual Page Number */
+
+/*
+ * Bit definitions for the Instruction TLB Translate Register
+ */
+#define SPR_ITLBTR_CC 0x00000001 /* Cache Coherency */
+#define SPR_ITLBTR_CI 0x00000002 /* Cache Inhibit */
+#define SPR_ITLBTR_WBC 0x00000004 /* Write-Back Cache */
+#define SPR_ITLBTR_WOM 0x00000008 /* Weakly-Ordered Memory */
+#define SPR_ITLBTR_A 0x00000010 /* Accessed */
+#define SPR_ITLBTR_D 0x00000020 /* Dirty */
+#define SPR_ITLBTR_SXE 0x00000040 /* User Read Enable */
+#define SPR_ITLBTR_UXE 0x00000080 /* User Write Enable */
+#define SPR_ITLBTR_PPN 0xfffff000 /* Physical Page Number */
+
+/*
+ * Bit definitions for Data Cache Control register
+ */
+#define SPR_DCCR_EW 0x000000ff /* Enable ways */
+
+/*
+ * Bit definitions for Insn Cache Control register
+ */
+#define SPR_ICCR_EW 0x000000ff /* Enable ways */
+
+/*
+ * Bit definitions for Data Cache Configuration Register
+ */
+
+#define SPR_DCCFGR_NCW 0x00000007
+#define SPR_DCCFGR_NCS 0x00000078
+#define SPR_DCCFGR_CBS 0x00000080
+#define SPR_DCCFGR_CWS 0x00000100
+#define SPR_DCCFGR_CCRI 0x00000200
+#define SPR_DCCFGR_CBIRI 0x00000400
+#define SPR_DCCFGR_CBPRI 0x00000800
+#define SPR_DCCFGR_CBLRI 0x00001000
+#define SPR_DCCFGR_CBFRI 0x00002000
+#define SPR_DCCFGR_CBWBRI 0x00004000
+
+#define SPR_DCCFGR_NCW_OFF 0
+#define SPR_DCCFGR_NCS_OFF 3
+#define SPR_DCCFGR_CBS_OFF 7
+
+/*
+ * Bit definitions for Instruction Cache Configuration Register
+ */
+#define SPR_ICCFGR_NCW 0x00000007
+#define SPR_ICCFGR_NCS 0x00000078
+#define SPR_ICCFGR_CBS 0x00000080
+#define SPR_ICCFGR_CCRI 0x00000200
+#define SPR_ICCFGR_CBIRI 0x00000400
+#define SPR_ICCFGR_CBPRI 0x00000800
+#define SPR_ICCFGR_CBLRI 0x00001000
+
+#define SPR_ICCFGR_NCW_OFF 0
+#define SPR_ICCFGR_NCS_OFF 3
+#define SPR_ICCFGR_CBS_OFF 7
+
+/*
+ * Bit definitions for Data MMU Configuration Register
+ */
+#define SPR_DMMUCFGR_NTW 0x00000003
+#define SPR_DMMUCFGR_NTS 0x0000001C
+#define SPR_DMMUCFGR_NAE 0x000000E0
+#define SPR_DMMUCFGR_CRI 0x00000100
+#define SPR_DMMUCFGR_PRI 0x00000200
+#define SPR_DMMUCFGR_TEIRI 0x00000400
+#define SPR_DMMUCFGR_HTR 0x00000800
+
+#define SPR_DMMUCFGR_NTW_OFF 0
+#define SPR_DMMUCFGR_NTS_OFF 2
+
+/*
+ * Bit definitions for Instruction MMU Configuration Register
+ */
+#define SPR_IMMUCFGR_NTW 0x00000003
+#define SPR_IMMUCFGR_NTS 0x0000001C
+#define SPR_IMMUCFGR_NAE 0x000000E0
+#define SPR_IMMUCFGR_CRI 0x00000100
+#define SPR_IMMUCFGR_PRI 0x00000200
+#define SPR_IMMUCFGR_TEIRI 0x00000400
+#define SPR_IMMUCFGR_HTR 0x00000800
+
+#define SPR_IMMUCFGR_NTW_OFF 0
+#define SPR_IMMUCFGR_NTS_OFF 2
+
+/*
+ * Bit definitions for Debug Control registers
+ */
+#define SPR_DCR_DP 0x00000001 /* DVR/DCR present */
+#define SPR_DCR_CC 0x0000000e /* Compare condition */
+#define SPR_DCR_SC 0x00000010 /* Signed compare */
+#define SPR_DCR_CT 0x000000e0 /* Compare to */
+
+/* Bit results with SPR_DCR_CC mask */
+#define SPR_DCR_CC_MASKED 0x00000000
+#define SPR_DCR_CC_EQUAL 0x00000002
+#define SPR_DCR_CC_LESS 0x00000004
+#define SPR_DCR_CC_LESSE 0x00000006
+#define SPR_DCR_CC_GREAT 0x00000008
+#define SPR_DCR_CC_GREATE 0x0000000a
+#define SPR_DCR_CC_NEQUAL 0x0000000c
+
+/* Bit results with SPR_DCR_CT mask */
+#define SPR_DCR_CT_DISABLED 0x00000000
+#define SPR_DCR_CT_IFEA 0x00000020
+#define SPR_DCR_CT_LEA 0x00000040
+#define SPR_DCR_CT_SEA 0x00000060
+#define SPR_DCR_CT_LD 0x00000080
+#define SPR_DCR_CT_SD 0x000000a0
+#define SPR_DCR_CT_LSEA 0x000000c0
+#define SPR_DCR_CT_LSD 0x000000e0
+
+/*
+ * Bit definitions for Debug Mode 1 register
+ */
+#define SPR_DMR1_CW 0x000fffff /* Chain register pair data */
+#define SPR_DMR1_CW0_AND 0x00000001
+#define SPR_DMR1_CW0_OR 0x00000002
+#define SPR_DMR1_CW0 (SPR_DMR1_CW0_AND | SPR_DMR1_CW0_OR)
+#define SPR_DMR1_CW1_AND 0x00000004
+#define SPR_DMR1_CW1_OR 0x00000008
+#define SPR_DMR1_CW1 (SPR_DMR1_CW1_AND | SPR_DMR1_CW1_OR)
+#define SPR_DMR1_CW2_AND 0x00000010
+#define SPR_DMR1_CW2_OR 0x00000020
+#define SPR_DMR1_CW2 (SPR_DMR1_CW2_AND | SPR_DMR1_CW2_OR)
+#define SPR_DMR1_CW3_AND 0x00000040
+#define SPR_DMR1_CW3_OR 0x00000080
+#define SPR_DMR1_CW3 (SPR_DMR1_CW3_AND | SPR_DMR1_CW3_OR)
+#define SPR_DMR1_CW4_AND 0x00000100
+#define SPR_DMR1_CW4_OR 0x00000200
+#define SPR_DMR1_CW4 (SPR_DMR1_CW4_AND | SPR_DMR1_CW4_OR)
+#define SPR_DMR1_CW5_AND 0x00000400
+#define SPR_DMR1_CW5_OR 0x00000800
+#define SPR_DMR1_CW5 (SPR_DMR1_CW5_AND | SPR_DMR1_CW5_OR)
+#define SPR_DMR1_CW6_AND 0x00001000
+#define SPR_DMR1_CW6_OR 0x00002000
+#define SPR_DMR1_CW6 (SPR_DMR1_CW6_AND | SPR_DMR1_CW6_OR)
+#define SPR_DMR1_CW7_AND 0x00004000
+#define SPR_DMR1_CW7_OR 0x00008000
+#define SPR_DMR1_CW7 (SPR_DMR1_CW7_AND | SPR_DMR1_CW7_OR)
+#define SPR_DMR1_CW8_AND 0x00010000
+#define SPR_DMR1_CW8_OR 0x00020000
+#define SPR_DMR1_CW8 (SPR_DMR1_CW8_AND | SPR_DMR1_CW8_OR)
+#define SPR_DMR1_CW9_AND 0x00040000
+#define SPR_DMR1_CW9_OR 0x00080000
+#define SPR_DMR1_CW9 (SPR_DMR1_CW9_AND | SPR_DMR1_CW9_OR)
+#define SPR_DMR1_RES1 0x00300000 /* Reserved */
+#define SPR_DMR1_ST 0x00400000 /* Single-step trace*/
+#define SPR_DMR1_BT 0x00800000 /* Branch trace */
+#define SPR_DMR1_RES2 0xff000000 /* Reserved */
+
+/*
+ * Bit definitions for Debug Mode 2 register. AWTC and WGB corrected by JPB
+ */
+#define SPR_DMR2_WCE0 0x00000001 /* Watchpoint counter 0 enable */
+#define SPR_DMR2_WCE1 0x00000002 /* Watchpoint counter 0 enable */
+#define SPR_DMR2_AWTC 0x00000ffc /* Assign watchpoints to counters */
+#define SPR_DMR2_AWTC_OFF 2 /* Bit offset to AWTC field */
+#define SPR_DMR2_WGB 0x003ff000 /* Watch generating breakpoint */
+#define SPR_DMR2_WGB_OFF 12 /* Bit offset to WGB field */
+#define SPR_DMR2_WBS 0xffc00000 /* Watchpoint status */
+#define SPR_DMR2_WBS_OFF 22 /* Bit offset to WBS field */
+
+/*
+ * Bit definitions for Debug watchpoint counter registers
+ */
+#define SPR_DWCR_COUNT 0x0000ffff /* Count */
+#define SPR_DWCR_MATCH 0xffff0000 /* Match */
+#define SPR_DWCR_MATCH_OFF 16 /* Match bit offset */
+
+/*
+ * Bit definitions for Debug stop register
+ *
+ */
+#define SPR_DSR_RSTE 0x00000001 /* Reset exception */
+#define SPR_DSR_BUSEE 0x00000002 /* Bus error exception */
+#define SPR_DSR_DPFE 0x00000004 /* Data Page Fault exception */
+#define SPR_DSR_IPFE 0x00000008 /* Insn Page Fault exception */
+#define SPR_DSR_TTE 0x00000010 /* Tick Timer exception */
+#define SPR_DSR_AE 0x00000020 /* Alignment exception */
+#define SPR_DSR_IIE 0x00000040 /* Illegal Instruction exception */
+#define SPR_DSR_IE 0x00000080 /* Interrupt exception */
+#define SPR_DSR_DME 0x00000100 /* DTLB miss exception */
+#define SPR_DSR_IME 0x00000200 /* ITLB miss exception */
+#define SPR_DSR_RE 0x00000400 /* Range exception */
+#define SPR_DSR_SCE 0x00000800 /* System call exception */
+#define SPR_DSR_FPE 0x00001000 /* Floating Point Exception */
+#define SPR_DSR_TE 0x00002000 /* Trap exception */
+
+/*
+ * Bit definitions for Debug reason register
+ */
+#define SPR_DRR_RSTE 0x00000001 /* Reset exception */
+#define SPR_DRR_BUSEE 0x00000002 /* Bus error exception */
+#define SPR_DRR_DPFE 0x00000004 /* Data Page Fault exception */
+#define SPR_DRR_IPFE 0x00000008 /* Insn Page Fault exception */
+#define SPR_DRR_TTE 0x00000010 /* Tick Timer exception */
+#define SPR_DRR_AE 0x00000020 /* Alignment exception */
+#define SPR_DRR_IIE 0x00000040 /* Illegal Instruction exception */
+#define SPR_DRR_IE 0x00000080 /* Interrupt exception */
+#define SPR_DRR_DME 0x00000100 /* DTLB miss exception */
+#define SPR_DRR_IME 0x00000200 /* ITLB miss exception */
+#define SPR_DRR_RE 0x00000400 /* Range exception */
+#define SPR_DRR_SCE 0x00000800 /* System call exception */
+#define SPR_DRR_FPE 0x00001000 /* Floating Point Exception */
+#define SPR_DRR_TE 0x00002000 /* Trap exception */
+
+/*
+ * Bit definitions for Performance counters mode registers
+ */
+#define SPR_PCMR_CP 0x00000001 /* Counter present */
+#define SPR_PCMR_UMRA 0x00000002 /* User mode read access */
+#define SPR_PCMR_CISM 0x00000004 /* Count in supervisor mode */
+#define SPR_PCMR_CIUM 0x00000008 /* Count in user mode */
+#define SPR_PCMR_LA 0x00000010 /* Load access event */
+#define SPR_PCMR_SA 0x00000020 /* Store access event */
+#define SPR_PCMR_IF 0x00000040 /* Instruction fetch event*/
+#define SPR_PCMR_DCM 0x00000080 /* Data cache miss event */
+#define SPR_PCMR_ICM 0x00000100 /* Insn cache miss event */
+#define SPR_PCMR_IFS 0x00000200 /* Insn fetch stall event */
+#define SPR_PCMR_LSUS 0x00000400 /* LSU stall event */
+#define SPR_PCMR_BS 0x00000800 /* Branch stall event */
+#define SPR_PCMR_DTLBM 0x00001000 /* DTLB miss event */
+#define SPR_PCMR_ITLBM 0x00002000 /* ITLB miss event */
+#define SPR_PCMR_DDS 0x00004000 /* Data dependency stall event */
+#define SPR_PCMR_WPE 0x03ff8000 /* Watchpoint events */
+
+/*
+ * Bit definitions for the Power management register
+ */
+#define SPR_PMR_SDF 0x0000000f /* Slow down factor */
+#define SPR_PMR_DME 0x00000010 /* Doze mode enable */
+#define SPR_PMR_SME 0x00000020 /* Sleep mode enable */
+#define SPR_PMR_DCGE 0x00000040 /* Dynamic clock gating enable */
+#define SPR_PMR_SUME 0x00000080 /* Suspend mode enable */
+
+/*
+ * Bit definitions for PICMR
+ */
+#define SPR_PICMR_IUM 0xfffffffc /* Interrupt unmask */
+
+/*
+ * Bit definitions for PICPR
+ */
+#define SPR_PICPR_IPRIO 0xfffffffc /* Interrupt priority */
+
+/*
+ * Bit definitions for PICSR
+ */
+#define SPR_PICSR_IS 0xffffffff /* Interrupt status */
+
+/*
+ * Bit definitions for Tick Timer Control Register
+ */
+#define SPR_TTCR_CNT 0xffffffff /* Count, time period */
+#define SPR_TTMR_TP 0x0fffffff /* Time period */
+#define SPR_TTMR_IP 0x10000000 /* Interrupt Pending */
+#define SPR_TTMR_IE 0x20000000 /* Interrupt Enable */
+#define SPR_TTMR_DI 0x00000000 /* Disabled */
+#define SPR_TTMR_RT 0x40000000 /* Restart tick */
+#define SPR_TTMR_SR 0x80000000 /* Single run */
+#define SPR_TTMR_CR 0xc0000000 /* Continuous run */
+#define SPR_TTMR_M 0xc0000000 /* Tick mode */
+
+/*
+ * Bit definitions for the FP Control Status Register
+ */
+#define SPR_FPCSR_FPEE 0x00000001 /* Floating Point Exception Enable */
+#define SPR_FPCSR_RM 0x00000006 /* Rounding Mode */
+#define SPR_FPCSR_OVF 0x00000008 /* Overflow Flag */
+#define SPR_FPCSR_UNF 0x00000010 /* Underflow Flag */
+#define SPR_FPCSR_SNF 0x00000020 /* SNAN Flag */
+#define SPR_FPCSR_QNF 0x00000040 /* QNAN Flag */
+#define SPR_FPCSR_ZF 0x00000080 /* Zero Flag */
+#define SPR_FPCSR_IXF 0x00000100 /* Inexact Flag */
+#define SPR_FPCSR_IVF 0x00000200 /* Invalid Flag */
+#define SPR_FPCSR_INF 0x00000400 /* Infinity Flag */
+#define SPR_FPCSR_DZF 0x00000800 /* Divide By Zero Flag */
+#define SPR_FPCSR_ALLF (SPR_FPCSR_OVF | SPR_FPCSR_UNF | SPR_FPCSR_SNF | \
+ SPR_FPCSR_QNF | SPR_FPCSR_ZF | SPR_FPCSR_IXF | \
+ SPR_FPCSR_IVF | SPR_FPCSR_INF | SPR_FPCSR_DZF)
+
+#define FPCSR_RM_RN (0<<1)
+#define FPCSR_RM_RZ (1<<1)
+#define FPCSR_RM_RIP (2<<1)
+#define FPCSR_RM_RIN (3<<1)
+
+/*
+ * l.nop constants
+ */
+#define NOP_NOP 0x0000 /* Normal nop instruction */
+#define NOP_EXIT 0x0001 /* End of simulation */
+#define NOP_REPORT 0x0002 /* Simple report */
+#define NOP_PUTC 0x0004 /* Simputc instruction */
+#define NOP_CNT_RESET 0x0005 /* Reset statistics counters */
+#define NOP_GET_TICKS 0x0006 /* Get # ticks running */
+#define NOP_GET_PS 0x0007 /* Get picosecs/cycle */
+#define NOP_REPORT_FIRST 0x0400 /* Report with number */
+#define NOP_REPORT_LAST 0x03ff /* Report with number */
+
+#endif /* SPR_DEFS__H */
diff --git a/arch/openrisc/include/asm/string.h b/arch/openrisc/include/asm/string.h
new file mode 100644
index 0000000..73e2655
--- /dev/null
+++ b/arch/openrisc/include/asm/string.h
@@ -0,0 +1,4 @@
+#ifndef __ASM_OPENRISC_STRING_H
+#define __ASM_OPENRISC_STRING_H
+
+#endif
diff --git a/arch/openrisc/include/asm/swab.h b/arch/openrisc/include/asm/swab.h
new file mode 100644
index 0000000..b07e1d5
--- /dev/null
+++ b/arch/openrisc/include/asm/swab.h
@@ -0,0 +1,4 @@
+#ifndef _ASM_SWAB_H
+#define _ASM_SWAB_H
+
+#endif /* _ASM_SWAB_H */
diff --git a/arch/openrisc/include/asm/system.h b/arch/openrisc/include/asm/system.h
new file mode 100644
index 0000000..d680363
--- /dev/null
+++ b/arch/openrisc/include/asm/system.h
@@ -0,0 +1,39 @@
+/*
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __ASM_OPENRISC_SYSTEM_H
+#define __ASM_OPENRISC_SYSTEM_H
+
+#include <asm/spr-defs.h>
+
+static inline unsigned long mfspr(unsigned long add)
+{
+ unsigned long ret;
+
+ __asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add));
+
+ return ret;
+}
+
+static inline void mtspr(unsigned long add, unsigned long val)
+{
+ __asm__ __volatile__ ("l.mtspr r0,%1,%0" : : "K" (add), "r" (val));
+}
+
+#endif /* __ASM_OPENRISC_SYSTEM_H */
diff --git a/arch/openrisc/include/asm/types.h b/arch/openrisc/include/asm/types.h
new file mode 100644
index 0000000..55efa36
--- /dev/null
+++ b/arch/openrisc/include/asm/types.h
@@ -0,0 +1,79 @@
+/*
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _ASM_TYPES_H
+#define _ASM_TYPES_H
+
+/*
+ * This file is never included by application software unless
+ * explicitly requested (e.g., via linux/types.h) in which case the
+ * application is Linux specific so (user-) name space pollution is
+ * not a major issue. However, for interoperability, libraries still
+ * need to be careful to avoid a name clashes.
+ */
+
+typedef unsigned short umode_t;
+
+/*
+ * __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
+ * header files exported to user space
+ */
+
+typedef __signed__ char __s8;
+typedef unsigned char __u8;
+
+typedef __signed__ short __s16;
+typedef unsigned short __u16;
+
+typedef __signed__ int __s32;
+typedef unsigned int __u32;
+
+#if defined(__GNUC__)
+__extension__ typedef __signed__ long long __s64;
+__extension__ typedef unsigned long long __u64;
+#endif
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+typedef signed char s8;
+typedef unsigned char u8;
+
+typedef signed short s16;
+typedef unsigned short u16;
+
+typedef signed int s32;
+typedef unsigned int u32;
+
+typedef signed long long s64;
+typedef unsigned long long u64;
+
+#define BITS_PER_LONG 32
+
+/* Dma addresses are 32-bits wide. */
+
+typedef u32 dma_addr_t;
+
+/*typedef unsigned long phys_addr_t;*/
+typedef unsigned long phys_size_t;
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_TYPES_H */
diff --git a/arch/openrisc/lib/Makefile b/arch/openrisc/lib/Makefile
new file mode 100644
index 0000000..aaf93cb
--- /dev/null
+++ b/arch/openrisc/lib/Makefile
@@ -0,0 +1,6 @@
+obj-y += clock.o
+obj-y += board.o
+obj-y += cpuinfo.o
+obj-y += muldi3.o
+obj-y += lshrdi3.o
+obj-y += ashldi3.o
diff --git a/arch/openrisc/lib/ashldi3.S b/arch/openrisc/lib/ashldi3.S
new file mode 100644
index 0000000..3e422fa
--- /dev/null
+++ b/arch/openrisc/lib/ashldi3.S
@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
+ *
+ * Extracted from gcc generated assembly.
+ *
+ * Extended precision shifts.
+ *
+ * R3/R4 (MSW, LSW) has 64 bit value
+ * R5 has shift count
+ * result in R11/R12
+ *
+ */
+
+.globl __ashldi3
+
+__ashldi3:
+ l.sfeqi r5,0x0
+ l.bf out /* if count = 0, go out */
+
+ l.addi r6,r0,0x20 /* r6 = 32 */
+ l.sub r6,r6,r5 /* r6 = 32 - count */
+ l.sfgtsi r6,0x0 /* if count >= 32 */
+ l.bnf more_than_32 /* branch to more_than_32 */
+ l.nop 0x0
+
+less_than_32:
+ l.srl r6,r4,r6 /* r6 gets the bits moved from LSW to MSW */
+ l.sll r3,r3,r5 /* shift MSW */
+ l.sll r4,r4,r5 /* shift LSW */
+ l.or r3,r6,r3 /* MSW gets bits shifted from LSW */
+
+out:
+ l.ori r11,r3,0x0
+ l.jr r9
+ l.ori r12,r4,0x0
+
+more_than_32:
+ l.sub r3,r0,r6 /* r3 = -r6, the number of bits above 32 */
+ l.sll r3,r4,r3 /* MSW = LSW << r3 */
+ l.j out /* go out */
+ l.addi r4,r0,0x0 /* LSW = 0 */
diff --git a/arch/openrisc/lib/board.c b/arch/openrisc/lib/board.c
new file mode 100644
index 0000000..a2158cb
--- /dev/null
+++ b/arch/openrisc/lib/board.c
@@ -0,0 +1,42 @@
+/*
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <init.h>
+#include <memory.h>
+#include <asm-generic/memory_layout.h>
+
+int openrisc_mem_malloc_init(void)
+{
+
+ mem_malloc_init((void *)(OPENRISC_SOPC_TEXT_BASE - MALLOC_SIZE),
+ (void *)(OPENRISC_SOPC_TEXT_BASE - 1));
+
+ return 0;
+}
+
+core_initcall(openrisc_mem_malloc_init);
+
+void arch_shutdown(void)
+{
+}
diff --git a/arch/openrisc/lib/clock.c b/arch/openrisc/lib/clock.c
new file mode 100644
index 0000000..ab0a90d
--- /dev/null
+++ b/arch/openrisc/lib/clock.c
@@ -0,0 +1,50 @@
+/*
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <clock.h>
+#include <init.h>
+#include <asm/system.h>
+#include <asm/openrisc_exc.h>
+
+static uint64_t openrisc_clocksource_read(void)
+{
+ return (uint64_t)(mfspr(SPR_TTCR));
+}
+
+static struct clocksource cs = {
+ .read = openrisc_clocksource_read,
+ .mask = 0xffffffff,
+ .shift = 12,
+};
+
+static int clocksource_init(void)
+{
+ mtspr(SPR_TTMR, SPR_TTMR_CR | 0xFFFFFF);
+ cs.mult = clocksource_hz2mult(OPENRISC_TIMER_FREQ, cs.shift);
+
+ init_clock(&cs);
+
+ return 0;
+}
+
+core_initcall(clocksource_init);
diff --git a/arch/openrisc/lib/cpuinfo.c b/arch/openrisc/lib/cpuinfo.c
new file mode 100644
index 0000000..3ec44c1
--- /dev/null
+++ b/arch/openrisc/lib/cpuinfo.c
@@ -0,0 +1,156 @@
+/*
+ * (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ * (C) Copyright 2011, Julius Baxter <julius@opencores.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/system.h>
+#include <asm/cache.h>
+#include <asm/openrisc_exc.h>
+
+static volatile int illegal_instruction;
+
+static void illegal_instruction_handler(void)
+{
+ ulong *epcr = (ulong *)mfspr(SPR_EPCR_BASE);
+
+ /* skip over the illegal instruction */
+ mtspr(SPR_EPCR_BASE, (ulong)(++epcr));
+ illegal_instruction = 1;
+}
+
+static int checkinstructions(void)
+{
+ ulong ra = 1, rb = 1, rc;
+
+ exception_install_handler(EXC_ILLEGAL_INSTR,
+ illegal_instruction_handler);
+
+ illegal_instruction = 0;
+ asm volatile("l.mul %0,%1,%2" : "=r" (rc) : "r" (ra), "r" (rb));
+ printf(" Hardware multiplier: %s\n",
+ illegal_instruction ? "no" : "yes");
+
+ illegal_instruction = 0;
+ asm volatile("l.div %0,%1,%2" : "=r" (rc) : "r" (ra), "r" (rb));
+ printf(" Hardware divider: %s\n",
+ illegal_instruction ? "no" : "yes");
+
+ exception_free_handler(EXC_ILLEGAL_INSTR);
+
+ return 0;
+}
+
+int checkcpu(void)
+{
+ ulong upr = mfspr(SPR_UPR);
+ ulong vr = mfspr(SPR_VR);
+ ulong iccfgr = mfspr(SPR_ICCFGR);
+ ulong dccfgr = mfspr(SPR_DCCFGR);
+ ulong immucfgr = mfspr(SPR_IMMUCFGR);
+ ulong dmmucfgr = mfspr(SPR_DMMUCFGR);
+ ulong cpucfgr = mfspr(SPR_CPUCFGR);
+ uint ver = (vr & SPR_VR_VER) >> 24;
+ uint rev = vr & SPR_VR_REV;
+ uint block_size;
+ uint ways;
+ uint sets;
+
+ printf("CPU: OpenRISC-%x00 (rev %d) @ %d MHz\n",
+ ver, rev, (CONFIG_SYS_CLK_FREQ / 1000000));
+
+ if (upr & SPR_UPR_DCP) {
+ block_size = (dccfgr & SPR_DCCFGR_CBS) ? 32 : 16;
+ ways = 1 << (dccfgr & SPR_DCCFGR_NCW);
+ printf(" D-Cache: %d bytes, %d bytes/line, %d way(s)\n",
+ checkdcache(), block_size, ways);
+ } else {
+ printf(" D-Cache: no\n");
+ }
+
+ if (upr & SPR_UPR_ICP) {
+ block_size = (iccfgr & SPR_ICCFGR_CBS) ? 32 : 16;
+ ways = 1 << (iccfgr & SPR_ICCFGR_NCW);
+ printf(" I-Cache: %d bytes, %d bytes/line, %d way(s)\n",
+ checkicache(), block_size, ways);
+ } else {
+ printf(" I-Cache: no\n");
+ }
+
+ if (upr & SPR_UPR_DMP) {
+ sets = 1 << ((dmmucfgr & SPR_DMMUCFGR_NTS) >> 2);
+ ways = (dmmucfgr & SPR_DMMUCFGR_NTW) + 1;
+ printf(" DMMU: %d sets, %d way(s)\n",
+ sets, ways);
+ } else {
+ printf(" DMMU: no\n");
+ }
+
+ if (upr & SPR_UPR_IMP) {
+ sets = 1 << ((immucfgr & SPR_IMMUCFGR_NTS) >> 2);
+ ways = (immucfgr & SPR_IMMUCFGR_NTW) + 1;
+ printf(" IMMU: %d sets, %d way(s)\n",
+ sets, ways);
+ } else {
+ printf(" IMMU: no\n");
+ }
+
+ printf(" MAC unit: %s\n",
+ (upr & SPR_UPR_MP) ? "yes" : "no");
+ printf(" Debug unit: %s\n",
+ (upr & SPR_UPR_DUP) ? "yes" : "no");
+ printf(" Performance counters: %s\n",
+ (upr & SPR_UPR_PCUP) ? "yes" : "no");
+ printf(" Power management: %s\n",
+ (upr & SPR_UPR_PMP) ? "yes" : "no");
+ printf(" Interrupt controller: %s\n",
+ (upr & SPR_UPR_PICP) ? "yes" : "no");
+ printf(" Timer: %s\n",
+ (upr & SPR_UPR_TTP) ? "yes" : "no");
+ printf(" Custom unit(s): %s\n",
+ (upr & SPR_UPR_CUP) ? "yes" : "no");
+
+ printf(" Supported instructions:\n");
+ printf(" ORBIS32: %s\n",
+ (cpucfgr & SPR_CPUCFGR_OB32S) ? "yes" : "no");
+ printf(" ORBIS64: %s\n",
+ (cpucfgr & SPR_CPUCFGR_OB64S) ? "yes" : "no");
+ printf(" ORFPX32: %s\n",
+ (cpucfgr & SPR_CPUCFGR_OF32S) ? "yes" : "no");
+ printf(" ORFPX64: %s\n",
+ (cpucfgr & SPR_CPUCFGR_OF64S) ? "yes" : "no");
+
+ checkinstructions();
+
+ return 0;
+}
+
+static int do_cpuinfo(struct command *cmdtp, int argc, char *argv[])
+{
+ checkcpu();
+ return 0;
+}
+
+BAREBOX_CMD_START(cpuinfo)
+ .cmd = do_cpuinfo,
+ .usage = "Show info about CPU",
+BAREBOX_CMD_END
diff --git a/arch/openrisc/lib/lshrdi3.S b/arch/openrisc/lib/lshrdi3.S
new file mode 100644
index 0000000..de30445
--- /dev/null
+++ b/arch/openrisc/lib/lshrdi3.S
@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
+ *
+ * Extracted from gcc generated assembly.
+ *
+ * Extended precision shifts.
+ *
+ * R3/R4 (MSW, LSW) has 64 bit value
+ * R5 has shift count
+ * result in R11/R12
+ *
+ */
+
+.globl __lshrdi3
+
+__lshrdi3:
+ l.sfeqi r5,0x0
+ l.bf out /* if count = 0, go out */
+
+ l.addi r6,r0,0x20 /* r6 = 32 */
+ l.sub r6,r6,r5 /* r6 = 32 - count */
+ l.sfgtsi r6,0x0 /* if count >= 32 */
+ l.bnf more_than_32 /* branch to more_than_32 */
+ l.nop 0x0
+
+less_than_32:
+ l.sll r6,r3,r6 /* r6 gets the bits moved from MSW to LSW */
+ l.srl r4,r4,r5 /* shift LSW */
+ l.srl r3,r3,r5 /* shift MSW */
+ l.or r4,r6,r4 /* LSW gets bits shifted from MSW */
+
+ out:
+ l.ori r11,r3,0x0
+ l.jr r9
+ l.ori r12,r4,0x0
+
+more_than_32:
+ l.sub r4,r0,r6 /* r4 = -r6, the number of bits above 32 */
+ l.srl r4,r3,r4 /* LSW = MSW >> r4 */
+ l.j out /* go out */
+ l.addi r3,r0,0x0 /* MSW = 0 */
diff --git a/arch/openrisc/lib/muldi3.S b/arch/openrisc/lib/muldi3.S
new file mode 100644
index 0000000..902338a
--- /dev/null
+++ b/arch/openrisc/lib/muldi3.S
@@ -0,0 +1,58 @@
+/*
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
+ *
+ * Extracted from gcc generated assembly.
+ *
+ * Multiply two quads. Hereafter, the illustration of what is going on :
+ *
+ * | r3 | r4 |
+ * | r5 | r6 |
+ * --------------------
+ * | r4 * r6 |
+ * | r3 * r6 | | +
+ * | r5 * r4 | | +
+ * | r3 * r5 | | | +
+ * ------------------------------------------- =
+ * | 64 bits result |
+ *
+ */
+
+.globl __muldi3
+
+__muldi3:
+ /* starts with the full 64 bits mul (r4 * r6) */
+ l.andi r7,r4,0xffff
+ l.srli r8,r4,0x10
+
+ l.andi r11,r6,0xffff
+ l.srli r12,r6,0x10
+
+ l.mul r13,r11,r7
+ l.mul r11,r11,r8
+ l.mul r7,r12,r7
+
+ l.srli r15,r13,0x10
+ l.add r7,r7,r15
+ l.add r7,r11,r7
+ l.sfleu r11,r7
+ l.bf no_carry
+ l.mul r8,r12,r8
+
+ l.movhi r15,0x1
+ l.add r8,r8,r15
+
+no_carry:
+ /* Now compute r3 * r6 */
+ l.mul r6,r6,r3
+ /* and r4 * r5 */
+ l.mul r4,r4,r5
+ /* finaly previous results and put the result in r11:r12 */
+ l.srli r3,r7,0x10
+ l.slli r7,r7,0x10
+ l.andi r13,r13,0xffff
+ l.add r8,r8,r3
+ l.add r11,r4,r6
+ l.add r12,r7,r13
+ l.add r11,r11,r8
+ l.jr r9
+ l.nop
--
1.7.7
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next reply other threads:[~2011-12-20 22:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-20 22:11 franck.jullien [this message]
2011-12-20 22:11 ` [PATCH 2/2] Add a generic board franck.jullien
2012-01-02 12:31 ` [PATCH 1/2] Add OpenRISC arch Franck JULLIEN
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